Hi I use the feline advantage on my 6 fuzbuts. just a couple of drops on the back of the neck and they are fine for a month. My vet told me to use Borax laundry soap on my carpets. Sprinkle some down all over your carpets let stay on for about 30 min or more if possible, then vacuum up. It kills the fleas and their eggs and it really works great. Be sure to put the babies in their cage while you do this. I hope this info helps you.. Happy Dooking Candy & The 6 Pillow Piranhas [Posted in FML issue 2995]